JOHO: David Weinberger’s Journal of the Hyperlinked Organization. David is the blog world’s philosopher-in-residence, Cluetrain co-author, and a Fellow at Harvard’s BerkmanCenter for Internet & Society.

Esther Dyson: Editor at large at CNET Networks, where she is responsible for its monthly newsletter, Release 1.0, and its PC Forum, the high-tech market's leading annual executive conference.